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        <h1>
          <div class="m-doc-template">template&lt;typename T&gt;</div>
          <span class="m-breadcrumb"><a href="namespacetf.html">tf</a>::<wbr/></span>cudaDeviceAllocator <span class="m-thin">class</span>
        </h1>
        <p>class to create a CUDA device allocator</p>
        <table class="m-table m-fullwidth m-flat">
          <thead>
            <tr><th colspan="2">Template parameters</th></tr>
          </thead>
          <tbody>
            <tr>
              <td style="width: 1%">T</td>
              <td>element type</td>
            </tr>
          </tbody>
        </table>
        <nav class="m-block m-default">
          <h3>Contents</h3>
          <ul>
            <li>
              Reference
              <ul>
                <li><a href="#pub-types">Public types</a></li>
                <li><a href="#typeless-methods">Constructors, destructors, conversion operators</a></li>
                <li><a href="#pub-methods">Public functions</a></li>
              </ul>
            </li>
          </ul>
        </nav>
<p>A cudaDeviceAllocator enables device-specific allocation for standard library containers. It is typically passed as template parameter when declaring standard library containers (e.g. <a href="http://en.cppreference.com/w/cpp/container/vector.html" class="m-doc-external">std::<wbr />vector</a>).</p>
        <section id="pub-types">
          <h2><a href="#pub-types">Public types</a></h2>
          <dl class="m-doc">
            <dt>
              <div class="m-doc-template">template&lt;typename U&gt;</div>
              struct <a href="structtf_1_1cudaDeviceAllocator_1_1rebind.html" class="m-doc">rebind</a>
            </dt>
            <dd>its member type <code>U</code> is the equivalent allocator type to allocate elements of type U</dd>
            <dt id="a37039db4f27e849c44b361c6d107903c">
              using <a href="#a37039db4f27e849c44b361c6d107903c" class="m-doc-self">value_type</a> = T
            </dt>
            <dd>element type</dd>
            <dt id="a68c29bda337094fcb9fc6f3e9445ca9c">
              using <a href="#a68c29bda337094fcb9fc6f3e9445ca9c" class="m-doc-self">pointer</a> = T*
            </dt>
            <dd>element pointer type</dd>
            <dt id="aef9d9622074af9b3ce50b5a63346998b">
              using <a href="#aef9d9622074af9b3ce50b5a63346998b" class="m-doc-self">reference</a> = T&amp;
            </dt>
            <dd>element reference type</dd>
            <dt id="a3cce1e14aad82c9444ab3076a8f35482">
              using <a href="#a3cce1e14aad82c9444ab3076a8f35482" class="m-doc-self">const_pointer</a> = const T*
            </dt>
            <dd>const element pointer type</dd>
            <dt id="a449d07320a94b00d4b09fa0f4e1ce399">
              using <a href="#a449d07320a94b00d4b09fa0f4e1ce399" class="m-doc-self">const_reference</a> = const T&amp;
            </dt>
            <dd>constant element reference type</dd>
            <dt id="ac4b1781c2f116866927701d931bf8852">
              using <a href="#ac4b1781c2f116866927701d931bf8852" class="m-doc-self">size_type</a> = <a href="http://en.cppreference.com/w/cpp/types/size_t.html" class="m-doc-external">std::<wbr />size_t</a>
            </dt>
            <dd>size type</dd>
            <dt id="aaacd3b516ceaa9468e40dcf1a048a453">
              using <a href="#aaacd3b516ceaa9468e40dcf1a048a453" class="m-doc-self">difference_type</a> = <a href="http://en.cppreference.com/w/cpp/types/ptrdiff_t.html" class="m-doc-external">std::<wbr />ptrdiff_t</a>
            </dt>
            <dd>pointer difference type</dd>
          </dl>
        </section>
        <section id="typeless-methods">
          <h2><a href="#typeless-methods">Constructors, destructors, conversion operators</a></h2>
          <dl class="m-doc">
            <dt id="a5db2fe60c59fe95ceee94392508f9f82">
              <span class="m-doc-wrap-bumper"><a href="#a5db2fe60c59fe95ceee94392508f9f82" class="m-doc-self">cudaDeviceAllocator</a>(</span><span class="m-doc-wrap">) <span class="m-label m-flat m-success">noexcept</span></span>
            </dt>
            <dd>Constructs a device allocator object.</dd>
            <dt id="a8c6f5c1a2ad3fb5d933911c18f10397e">
              <span class="m-doc-wrap-bumper"><a href="#a8c6f5c1a2ad3fb5d933911c18f10397e" class="m-doc-self">cudaDeviceAllocator</a>(</span><span class="m-doc-wrap">const <a href="classtf_1_1cudaDeviceAllocator.html" class="m-doc">cudaDeviceAllocator</a>&amp;) <span class="m-label m-flat m-success">noexcept</span></span>
            </dt>
            <dd>Constructs a device allocator object from another device allocator object.</dd>
            <dt id="aba7fc3e232d452c4c474225bdf4adabb">
              <div class="m-doc-template">template&lt;typename U&gt;</div>
              <span class="m-doc-wrap-bumper"><a href="#aba7fc3e232d452c4c474225bdf4adabb" class="m-doc-self">cudaDeviceAllocator</a>(</span><span class="m-doc-wrap">const <a href="classtf_1_1cudaDeviceAllocator.html" class="m-doc">cudaDeviceAllocator</a>&lt;U&gt;&amp;) <span class="m-label m-flat m-success">noexcept</span></span>
            </dt>
            <dd>Constructs a device allocator object from another device allocator object with a different element type.</dd>
            <dt id="a1c5dd0ea4e5c574e57b804cfff24ec0b">
              <span class="m-doc-wrap-bumper"><a href="#a1c5dd0ea4e5c574e57b804cfff24ec0b" class="m-doc-self">~cudaDeviceAllocator</a>(</span><span class="m-doc-wrap">) <span class="m-label m-flat m-success">noexcept</span></span>
            </dt>
            <dd>Destructs the device allocator object.</dd>
          </dl>
        </section>
        <section id="pub-methods">
          <h2><a href="#pub-methods">Public functions</a></h2>
          <dl class="m-doc">
            <dt>
              <span class="m-doc-wrap-bumper">auto <a href="#a3aeae7566c71b25fc5b722f74b68a8f9" class="m-doc">address</a>(</span><span class="m-doc-wrap"><a href="classtf_1_1cudaDeviceAllocator.html#aef9d9622074af9b3ce50b5a63346998b" class="m-doc">reference</a> x) -&gt; <a href="classtf_1_1cudaDeviceAllocator.html#a68c29bda337094fcb9fc6f3e9445ca9c" class="m-doc">pointer</a></span>
            </dt>
            <dd>Returns the address of x.</dd>
            <dt>
              <span class="m-doc-wrap-bumper">auto <a href="#aadbef395cbe886d2be80ba1771992ffb" class="m-doc">address</a>(</span><span class="m-doc-wrap"><a href="classtf_1_1cudaDeviceAllocator.html#a449d07320a94b00d4b09fa0f4e1ce399" class="m-doc">const_<wbr />reference</a> x) const -&gt; <a href="classtf_1_1cudaDeviceAllocator.html#a3cce1e14aad82c9444ab3076a8f35482" class="m-doc">const_<wbr />pointer</a></span>
            </dt>
            <dd>Returns the address of x.</dd>
            <dt>
              <span class="m-doc-wrap-bumper">auto <a href="#a9cd24fe35ceef3d5cd386263b20d3093" class="m-doc">allocate</a>(</span><span class="m-doc-wrap"><a href="classtf_1_1cudaDeviceAllocator.html#ac4b1781c2f116866927701d931bf8852" class="m-doc">size_<wbr />type</a> n,
              const void* = 0) -&gt; <a href="classtf_1_1cudaDeviceAllocator.html#a68c29bda337094fcb9fc6f3e9445ca9c" class="m-doc">pointer</a></span>
            </dt>
            <dd>allocates block of storage.</dd>
            <dt>
              <span class="m-doc-wrap-bumper">void <a href="#acb6d952479fda4ac4269b9d40529a0a7" class="m-doc">deallocate</a>(</span><span class="m-doc-wrap"><a href="classtf_1_1cudaDeviceAllocator.html#a68c29bda337094fcb9fc6f3e9445ca9c" class="m-doc">pointer</a> ptr,
              <a href="classtf_1_1cudaDeviceAllocator.html#ac4b1781c2f116866927701d931bf8852" class="m-doc">size_<wbr />type</a>)</span>
            </dt>
            <dd>Releases a block of storage previously allocated with member allocate and not yet released.</dd>
            <dt>
              <span class="m-doc-wrap-bumper">auto <a href="#a095d67530352fb7be340775fe0c7b120" class="m-doc">max_size</a>(</span><span class="m-doc-wrap">) const -&gt; <a href="classtf_1_1cudaDeviceAllocator.html#ac4b1781c2f116866927701d931bf8852" class="m-doc">size_<wbr />type</a> <span class="m-label m-flat m-success">noexcept</span></span>
            </dt>
            <dd>returns the maximum number of elements that could potentially be allocated by this allocator</dd>
            <dt id="a280882efd5963a11aa5d79ed491c056e">
              <span class="m-doc-wrap-bumper">void <a href="#a280882efd5963a11aa5d79ed491c056e" class="m-doc-self">construct</a>(</span><span class="m-doc-wrap"><a href="classtf_1_1cudaDeviceAllocator.html#a68c29bda337094fcb9fc6f3e9445ca9c" class="m-doc">pointer</a>,
              <a href="classtf_1_1cudaDeviceAllocator.html#a449d07320a94b00d4b09fa0f4e1ce399" class="m-doc">const_<wbr />reference</a>)</span>
            </dt>
            <dd>ignored to avoid de-referencing device pointer from the host</dd>
            <dt id="af50777c1f25a5766980d8fdbdd250b83">
              <span class="m-doc-wrap-bumper">void <a href="#af50777c1f25a5766980d8fdbdd250b83" class="m-doc-self">destroy</a>(</span><span class="m-doc-wrap"><a href="classtf_1_1cudaDeviceAllocator.html#a68c29bda337094fcb9fc6f3e9445ca9c" class="m-doc">pointer</a>)</span>
            </dt>
            <dd>ignored to avoid de-referencing device pointer from the host</dd>
            <dt>
              <div class="m-doc-template">template&lt;typename U&gt;</div>
              <span class="m-doc-wrap-bumper">auto <a href="#a1038b32b85395c5f2e206221d0f849b7" class="m-doc">operator==</a>(</span><span class="m-doc-wrap">const <a href="classtf_1_1cudaDeviceAllocator.html" class="m-doc">cudaDeviceAllocator</a>&lt;U&gt;&amp;) const -&gt; bool <span class="m-label m-flat m-success">noexcept</span></span>
            </dt>
            <dd>compares two allocator of different types using <code>==</code></dd>
            <dt>
              <div class="m-doc-template">template&lt;typename U&gt;</div>
              <span class="m-doc-wrap-bumper">auto <a href="#ae31834c1ab0a8a9c88274ff524cebbac" class="m-doc">operator!=</a>(</span><span class="m-doc-wrap">const <a href="classtf_1_1cudaDeviceAllocator.html" class="m-doc">cudaDeviceAllocator</a>&lt;U&gt;&amp;) const -&gt; bool <span class="m-label m-flat m-success">noexcept</span></span>
            </dt>
            <dd>compares two allocator of different types using <code>!=</code></dd>
          </dl>
        </section>
        <section>
          <h2>Function documentation</h2>
          <section class="m-doc-details" id="a3aeae7566c71b25fc5b722f74b68a8f9"><div>
            <h3>
              <div class="m-doc-template">
                template&lt;typename T&gt;
              </div>
              <span class="m-doc-wrap-bumper"><a href="classtf_1_1cudaDeviceAllocator.html#a68c29bda337094fcb9fc6f3e9445ca9c" class="m-doc">pointer</a> tf::<wbr />cudaDeviceAllocator&lt;T&gt;::<wbr /></span><span class="m-doc-wrap"><span class="m-doc-wrap-bumper"><a href="#a3aeae7566c71b25fc5b722f74b68a8f9" class="m-doc-self">address</a>(</span><span class="m-doc-wrap"><a href="classtf_1_1cudaDeviceAllocator.html#aef9d9622074af9b3ce50b5a63346998b" class="m-doc">reference</a> x)</span></span>
            </h3>
            <p>Returns the address of x.</p>
            <table class="m-table m-fullwidth m-flat">
              <thead>
                <tr><th colspan="2">Parameters</th></tr>
              </thead>
              <tbody>
                <tr>
                  <td style="width: 1%">x</td>
                  <td>reference to an object</td>
                </tr>
              </tbody>
              <tfoot>
                <tr>
                  <th>Returns</th>
                  <td>a pointer to the object</td>
                </tr>
              </tfoot>
            </table>
<p>This effectively means returning &amp;x.</p>
          </div></section>
          <section class="m-doc-details" id="aadbef395cbe886d2be80ba1771992ffb"><div>
            <h3>
              <div class="m-doc-template">
                template&lt;typename T&gt;
              </div>
              <span class="m-doc-wrap-bumper"><a href="classtf_1_1cudaDeviceAllocator.html#a3cce1e14aad82c9444ab3076a8f35482" class="m-doc">const_<wbr />pointer</a> tf::<wbr />cudaDeviceAllocator&lt;T&gt;::<wbr /></span><span class="m-doc-wrap"><span class="m-doc-wrap-bumper"><a href="#aadbef395cbe886d2be80ba1771992ffb" class="m-doc-self">address</a>(</span><span class="m-doc-wrap"><a href="classtf_1_1cudaDeviceAllocator.html#a449d07320a94b00d4b09fa0f4e1ce399" class="m-doc">const_<wbr />reference</a> x) const</span></span>
            </h3>
            <p>Returns the address of x.</p>
            <table class="m-table m-fullwidth m-flat">
              <thead>
                <tr><th colspan="2">Parameters</th></tr>
              </thead>
              <tbody>
                <tr>
                  <td style="width: 1%">x</td>
                  <td>reference to an object</td>
                </tr>
              </tbody>
              <tfoot>
                <tr>
                  <th>Returns</th>
                  <td>a pointer to the object</td>
                </tr>
              </tfoot>
            </table>
<p>This effectively means returning &amp;x.</p>
          </div></section>
          <section class="m-doc-details" id="a9cd24fe35ceef3d5cd386263b20d3093"><div>
            <h3>
              <div class="m-doc-template">
                template&lt;typename T&gt;
              </div>
              <span class="m-doc-wrap-bumper"><a href="classtf_1_1cudaDeviceAllocator.html#a68c29bda337094fcb9fc6f3e9445ca9c" class="m-doc">pointer</a> tf::<wbr />cudaDeviceAllocator&lt;T&gt;::<wbr /></span><span class="m-doc-wrap"><span class="m-doc-wrap-bumper"><a href="#a9cd24fe35ceef3d5cd386263b20d3093" class="m-doc-self">allocate</a>(</span><span class="m-doc-wrap"><a href="classtf_1_1cudaDeviceAllocator.html#ac4b1781c2f116866927701d931bf8852" class="m-doc">size_<wbr />type</a> n,
              const void* = 0)</span></span>
            </h3>
            <p>allocates block of storage.</p>
            <table class="m-table m-fullwidth m-flat">
              <thead>
                <tr><th colspan="2">Parameters</th></tr>
              </thead>
              <tbody>
                <tr>
                  <td style="width: 1%">n</td>
                  <td>number of elements (each of size sizeof(value_type)) to be allocated</td>
                </tr>
              </tbody>
              <tfoot>
                <tr>
                  <th>Returns</th>
                  <td>a pointer to the initial element in the block of storage.</td>
                </tr>
              </tfoot>
            </table>
<p>Attempts to allocate a block of storage with a size large enough to contain <code>n</code> elements of member type, <code>value_type</code>, and returns a pointer to the first element.</p><p>The storage is aligned appropriately for object of type <code>value_type</code>, but they are not constructed.</p><p>The block of storage is allocated using cudaMalloc and throws <a href="http://en.cppreference.com/w/cpp/memory/new/bad_alloc.html" class="m-doc-external">std::<wbr />bad_alloc</a> if it cannot allocate the total amount of storage requested.</p>
          </div></section>
          <section class="m-doc-details" id="acb6d952479fda4ac4269b9d40529a0a7"><div>
            <h3>
              <div class="m-doc-template">
                template&lt;typename T&gt;
              </div>
              <span class="m-doc-wrap-bumper">void tf::<wbr />cudaDeviceAllocator&lt;T&gt;::<wbr /></span><span class="m-doc-wrap"><span class="m-doc-wrap-bumper"><a href="#acb6d952479fda4ac4269b9d40529a0a7" class="m-doc-self">deallocate</a>(</span><span class="m-doc-wrap"><a href="classtf_1_1cudaDeviceAllocator.html#a68c29bda337094fcb9fc6f3e9445ca9c" class="m-doc">pointer</a> ptr,
              <a href="classtf_1_1cudaDeviceAllocator.html#ac4b1781c2f116866927701d931bf8852" class="m-doc">size_<wbr />type</a>)</span></span>
            </h3>
            <p>Releases a block of storage previously allocated with member allocate and not yet released.</p>
            <table class="m-table m-fullwidth m-flat">
              <thead>
                <tr><th colspan="2">Parameters</th></tr>
              </thead>
              <tbody>
                <tr>
                  <td style="width: 1%">ptr</td>
                  <td>pointer to a block of storage previously allocated with allocate</td>
                </tr>
              </tbody>
            </table>
<p>The elements in the array are not destroyed by a call to this member function.</p>
          </div></section>
          <section class="m-doc-details" id="a095d67530352fb7be340775fe0c7b120"><div>
            <h3>
              <div class="m-doc-template">
                template&lt;typename T&gt;
              </div>
              <span class="m-doc-wrap-bumper"><a href="classtf_1_1cudaDeviceAllocator.html#ac4b1781c2f116866927701d931bf8852" class="m-doc">size_<wbr />type</a> tf::<wbr />cudaDeviceAllocator&lt;T&gt;::<wbr /></span><span class="m-doc-wrap"><span class="m-doc-wrap-bumper"><a href="#a095d67530352fb7be340775fe0c7b120" class="m-doc-self">max_size</a>(</span><span class="m-doc-wrap">) const <span class="m-label m-success">noexcept</span></span></span>
            </h3>
            <p>returns the maximum number of elements that could potentially be allocated by this allocator</p>
            <table class="m-table m-fullwidth m-flat">
              <tfoot>
                <tr>
                  <th style="width: 1%">Returns</th>
                  <td>the nubmer of elements that might be allcoated as maximum by a call to member allocate</td>
                </tr>
              </tfoot>
            </table>
<p>A call to member allocate with the value returned by this function can still fail to allocate the requested storage.</p>
          </div></section>
          <section class="m-doc-details" id="a1038b32b85395c5f2e206221d0f849b7"><div>
            <h3>
              <div class="m-doc-template">
                template&lt;typename T&gt;
                template&lt;typename U&gt;
              </div>
              <span class="m-doc-wrap-bumper">bool tf::<wbr />cudaDeviceAllocator&lt;T&gt;::<wbr /></span><span class="m-doc-wrap"><span class="m-doc-wrap-bumper"><a href="#a1038b32b85395c5f2e206221d0f849b7" class="m-doc-self">operator==</a>(</span><span class="m-doc-wrap">const <a href="classtf_1_1cudaDeviceAllocator.html" class="m-doc">cudaDeviceAllocator</a>&lt;U&gt;&amp;) const <span class="m-label m-success">noexcept</span></span></span>
            </h3>
            <p>compares two allocator of different types using <code>==</code></p>
<p>Device allocators of different types are always equal to each other because the storage allocated by the allocator <code>a1</code> can be deallocated through <code>a2</code>.</p>
          </div></section>
          <section class="m-doc-details" id="ae31834c1ab0a8a9c88274ff524cebbac"><div>
            <h3>
              <div class="m-doc-template">
                template&lt;typename T&gt;
                template&lt;typename U&gt;
              </div>
              <span class="m-doc-wrap-bumper">bool tf::<wbr />cudaDeviceAllocator&lt;T&gt;::<wbr /></span><span class="m-doc-wrap"><span class="m-doc-wrap-bumper"><a href="#ae31834c1ab0a8a9c88274ff524cebbac" class="m-doc-self">operator!=</a>(</span><span class="m-doc-wrap">const <a href="classtf_1_1cudaDeviceAllocator.html" class="m-doc">cudaDeviceAllocator</a>&lt;U&gt;&amp;) const <span class="m-label m-success">noexcept</span></span></span>
            </h3>
            <p>compares two allocator of different types using <code>!=</code></p>
<p>Device allocators of different types are always equal to each other because the storage allocated by the allocator <code>a1</code> can be deallocated through <code>a2</code>.</p>
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